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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2013
Barter and Trade Revenues and Expenses
(In millions)Years Ended December 31,
 2013 2012 2011
Barter and trade revenues$ 66.0 $ 56.5 $ 61.2
Barter and trade expenses  58.5   58.8   63.4